Paper: Some Properties of Preposition and Subordinate Conjunction Attachments

ACL ID C98-2229
Title Some Properties of Preposition and Subordinate Conjunction Attachments
Venue International Conference on Computational Linguistics
Session Main Conference
Year 1998
Authors

Determining the attachments of prepositions and subordinate conjunctions is a key prob- lem in parsing natural language. This paper presents a trainable approach to making these attachments through transformation sequences and error-driven learning. Our approach is broad coverage, and accounts for roughly three times the attachment cases that have previously been handled by corpus-based techniques. In addition, our approach is based on a simplified model of syntax that is more consistent with the practice in current state-of-the-art language processing systems. This paper sketches syntac- tic and algorithmic details, and presents exper- imental results on data sets derived from the Penn Treebank. We obtain an attachment ac- curacy of 75.4% for the general case, the first ...